[INFO] cloning repository https://github.com/robtfm/test_instance_index
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robtfm/test_instance_index" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobtfm%2Ftest_instance_index", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobtfm%2Ftest_instance_index'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f334a241953a827b69a4d6d2a8646f1dcccc80e8
[INFO] checking robtfm/test_instance_index against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobtfm%2Ftest_instance_index" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robtfm/test_instance_index on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/robtfm/test_instance_index
[INFO] finished tweaking git repo https://github.com/robtfm/test_instance_index
[INFO] tweaked toml for git repo https://github.com/robtfm/test_instance_index written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/robtfm/test_instance_index already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pp-rs v0.2.1
[INFO] [stderr]   Downloaded naga_oil v0.8.1
[INFO] [stderr]   Downloaded data-encoding v2.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d6eb42d69014eb7cba7b372bfc75c1b79d17175487030aeb6e825f2eeeecc48
[INFO] running `Command { std: "docker" "start" "-a" "2d6eb42d69014eb7cba7b372bfc75c1b79d17175487030aeb6e825f2eeeecc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d6eb42d69014eb7cba7b372bfc75c1b79d17175487030aeb6e825f2eeeecc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d6eb42d69014eb7cba7b372bfc75c1b79d17175487030aeb6e825f2eeeecc48", kill_on_drop: false }`
[INFO] [stdout] 2d6eb42d69014eb7cba7b372bfc75c1b79d17175487030aeb6e825f2eeeecc48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17580146e83473a4c2465b98a8adc461d7360f9b0535363f00f6bf6c4f3f1ca5
[INFO] running `Command { std: "docker" "start" "-a" "17580146e83473a4c2465b98a8adc461d7360f9b0535363f00f6bf6c4f3f1ca5", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking hexf-parse v0.2.1
[INFO] [stderr]     Checking pp-rs v0.2.1
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking unicode-ident v1.0.11
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking data-encoding v2.4.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]     Checking thiserror v1.0.44
[INFO] [stderr]     Checking naga v0.12.3
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking naga_oil v0.8.1
[INFO] [stderr]     Checking test_instance_index v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `naga` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use naga;
[INFO] [stdout]   |     ^^^^ the item `naga` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga_oil` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use naga_oil::{self, compose::ComposableModuleDescriptor};
[INFO] [stdout]   |                ^^^^ the item `naga_oil` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use naga;
[INFO] [stdout]   |     ^^^^ the item `naga` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga_oil` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use naga_oil::{self, compose::ComposableModuleDescriptor};
[INFO] [stdout]   |                ^^^^ the item `naga_oil` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.09s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "17580146e83473a4c2465b98a8adc461d7360f9b0535363f00f6bf6c4f3f1ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17580146e83473a4c2465b98a8adc461d7360f9b0535363f00f6bf6c4f3f1ca5", kill_on_drop: false }`
[INFO] [stdout] 17580146e83473a4c2465b98a8adc461d7360f9b0535363f00f6bf6c4f3f1ca5
[INFO] checking robtfm/test_instance_index against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobtfm%2Ftest_instance_index" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robtfm/test_instance_index on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/robtfm/test_instance_index
[INFO] finished tweaking git repo https://github.com/robtfm/test_instance_index
[INFO] tweaked toml for git repo https://github.com/robtfm/test_instance_index written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/robtfm/test_instance_index already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9830f84fff2778f7ef40ff0e362a421ba1b34067266f75d7486a641c4e354dd8
[INFO] running `Command { std: "docker" "start" "-a" "9830f84fff2778f7ef40ff0e362a421ba1b34067266f75d7486a641c4e354dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9830f84fff2778f7ef40ff0e362a421ba1b34067266f75d7486a641c4e354dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9830f84fff2778f7ef40ff0e362a421ba1b34067266f75d7486a641c4e354dd8", kill_on_drop: false }`
[INFO] [stdout] 9830f84fff2778f7ef40ff0e362a421ba1b34067266f75d7486a641c4e354dd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46574df079c0ace7a3d526f379fab6eab7a5ef06f99d461277c04fe458c47f38
[INFO] running `Command { std: "docker" "start" "-a" "46574df079c0ace7a3d526f379fab6eab7a5ef06f99d461277c04fe458c47f38", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking hexf-parse v0.2.1
[INFO] [stderr]     Checking unicode-ident v1.0.11
[INFO] [stderr]     Checking pp-rs v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking data-encoding v2.4.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]     Checking thiserror v1.0.44
[INFO] [stderr]     Checking naga v0.12.3
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking naga_oil v0.8.1
[INFO] [stderr]     Checking test_instance_index v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `naga` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use naga;
[INFO] [stdout]   |     ^^^^ the item `naga` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga_oil` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use naga_oil::{self, compose::ComposableModuleDescriptor};
[INFO] [stdout]   |                ^^^^ the item `naga_oil` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use naga;
[INFO] [stdout]   |     ^^^^ the item `naga` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `naga_oil` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use naga_oil::{self, compose::ComposableModuleDescriptor};
[INFO] [stdout]   |                ^^^^ the item `naga_oil` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.28s
[INFO] running `Command { std: "docker" "inspect" "46574df079c0ace7a3d526f379fab6eab7a5ef06f99d461277c04fe458c47f38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46574df079c0ace7a3d526f379fab6eab7a5ef06f99d461277c04fe458c47f38", kill_on_drop: false }`
[INFO] [stdout] 46574df079c0ace7a3d526f379fab6eab7a5ef06f99d461277c04fe458c47f38